Mutual Screw & Supply

0.139" CS X 10.734" ID Buna-N Nitrile O-Rings | AS568-279 | Dash 279 | 70 Durometer | Black (30 / Pkg.)

0.139" CS X 10.734" ID Buna-N Nitrile O-Rings | AS568-279 | Dash 279 | 70 - Main image
$37.69 $57.11 In stock

Buna-N Nitrile o-rings in AS568-279, 10.734" inner diameter by 0.139" cross-section. Service range -40°F to +250°F (-40°C to +121°C). Also known as NBR, Buna-N, Chemigum, Hycar, Perbunan.

Specifications

  • Product type: O-Ring
  • Material: Buna-N Nitrile
  • AS568 dash size: 279
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 10.734" (272.64 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 30 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Julian B. ★★★★★

The fit on this 279 size is spot on, slid right into the groove without any wrestling. I've used them in a hot water line around 180°F and the nitrile hasn't stiffened or cracked after a few weeks. Solid value for a 30-pack with these dimensions.

George I. ★★★★★

I needed a replacement for a stubborn seal on a large air compressor, and the 0.139" cross-section on these Buna-N rings seated perfectly without any trimming. The -40°F to +250°F temperature range gives me confidence it will hold up in my unheated workshop.

Victoria ★★★★★

I was a little nervous about getting the right fit for a hydraulic cylinder, but these o-rings matched the 10.734" inner diameter perfectly. The 70 durometer feels sturdy yet pliable enough to seat well without leaking.